I have a "bill_date" field that I want to be blank (NULL) until it's been billed, at which point the date will be entered.
I see that MySQL does not like NULL values in datetime fields. Do any of you have a simple way to handle this, or am I forced to use the min date as a "NULL equivalent" and then check for that date?
Thanks.
EDITED TO ADD:
Ok I do see that MySQL will accept the NULL value, but it won't accept it as a database update if I'm updating the record using PHP.
The variable name is $bill_date
but it won't leave the variable as NULL if I update a record without sending a value to $bill_date
-- I get this error:
Database query failed: Incorrect datetime value: '' for column 'bill_date' at row 1
I assume I need to actually send the word NULL, or leave it out of the update query altogether, to avoid this error? Am I right? Thanks!!!